2. A variable of two populations has a mean of 8 and a standard deviation of 6 for one of the populations and a mean of 7 and a standard deviation of 5 for the other population. (a)For independent samples of sizes 3 and 6, respectively, find the mean and standard deviation of X 1- X 2 (b)Must the variable under consideration be normally distributed on each of the two populations for you to answer part (a)? Explain your answer (c)Can you conclude that the variable X 1-X 2 is normally distributed? Explain your answer.
2. A variable of two populations has a mean of 8 and a standard deviation of 6 for one of the populations and a mean of 7 and a standard deviation of 5 for the other population. (a)For independent samples of sizes 3 and 6, respectively, find the mean and standard deviation of X 1- X 2 (b)Must the variable under consideration be normally distributed on each of the two populations for you to answer part (a)? Explain your answer (c)Can you conclude that the variable X 1-X 2 is normally distributed? Explain your answer.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Topic Video
Question
- A variable of two populations has a
mean of 8 and a standard deviation of 6 for one of the populations and a mean of 7 and a standard deviation of 5 for the other population.
(a)For independent
(b)Must the variable under consideration be
(c)Can you conclude that the variable ?̅ 1 − ?̅ 2 is normally distributed? Explain your answer.
![2. A variable of two populations has a mean of 8 and a standard deviation of 6 for one of the
populations and a mean of 7 and a standard deviation of 5 for the other population.
(a)For independent samples of sizes 3 and 6, respectively, find the mean and standard deviation of X 1-
X2
(b)Must the variable under consideration be normally distributed on each of the two populations for
you to answer part (a)? Explain your answer
(c)Can you conclude that the variable X 1-X 2 is normally distributed? Explain your answer.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffeb01f9e-b508-4ef6-bf00-40843e3590eb%2Faf76bbae-0c53-47c5-91f3-03bc401cf2e4%2Fh52b9cs_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2. A variable of two populations has a mean of 8 and a standard deviation of 6 for one of the
populations and a mean of 7 and a standard deviation of 5 for the other population.
(a)For independent samples of sizes 3 and 6, respectively, find the mean and standard deviation of X 1-
X2
(b)Must the variable under consideration be normally distributed on each of the two populations for
you to answer part (a)? Explain your answer
(c)Can you conclude that the variable X 1-X 2 is normally distributed? Explain your answer.
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